PROBLEM #2 (20 points) As shown in the diagram below, a mechanism uses an applied force and a spring to maintain a specied angle between two links. As the angle 6 between the links increases with the application of the horizontal force P, a rod, which is connected at A and passes through a pivoted collar at B, stretches the spring. If the spring is uncompressed in the position where B = 0", determine the force P that will maintain equilibrium at an the angle of B = 60. The spring has a stifiess of k = 2 kN/m; the two link each have a mass of 5 kg; and the mass of the rod is negligible. The two links are connected and constrained in the vertical plane as shown